Submission #104750

#	Time	Username	Problem	Language	Result	Execution time	Memory
104750		mzhao	Lamps (JOI19_lamps)	C++11	4 / 100	24 ms	12264 KiB

lamp

#include <bits/stdc++.h>
using namespace std;

#ifdef DEBUG
#define D(x...) printf(x)
#else
#define D(x...)
#endif

#define MN 1000009

int N, A[MN], B[MN], ans;
string AA, BB;

int main() {
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	cin >> N >> AA >> BB;
	for (int i = 0; i < N; i++) {
		A[i] = AA[i] == '1';
		B[i] = BB[i] == '1';
	}
	for (int i = 0, C; i < N; i++) {
		if ((!i || B[i] != B[i-1]) && B[i]) ans++;
	}
	printf("%d\n", ans);
}

Compilation message (stderr)

lamp.cpp: In function 'int main()':
lamp.cpp:22:18: warning: unused variable 'C' [-Wunused-variable]
  for (int i = 0, C; i < N; i++) {
                  ^

• Subtask 1: 0 / 6
• Subtask 2: 0 / 41
• Subtask 3: 4 / 4
• Subtask 4: 0 / 49